Use the Toggle Tag command to set or clear a tag on the line the cursor is on. Set tags to mark lines that you frequently refer to in a window. Tagged lines are highlighted. When you no longer need a tag on a line, move the cursor to the tagged line and use the Toggle Tag command. Use the Next Tag and the Prev Tag commands in the Search menu to move from one tag to another. The Clear All Tags command will clear all tags from the active window.